#99C539#99C539

#99C539 is a light, vivid yellow-green. Relative luminance 0.470; OKLCH L 76.6% C 0.171 H 125.5°. Best body text is #000000 at 10.40:1 contrast (WCAG AA passes).

Color values

HEX	#99C539
RGB	rgb(153, 197, 57)
HSL	hsl(79, 55%, 50%)
HSV	hsv(79, 71%, 77%)
CMYK	cmyk(22.3%, 0%, 71.1%, 22.7%)
CIE-LAB	lab(74.19, -34.36, 61.90)
CIE-LCH	lch(74.19, 70.80, 119.03°)
OKLab	oklab(76.58% -0.0991 0.1387)
OKLCH	oklch(76.58% 0.171 125.5)
XYZ	xyz(33.8418, 46.9998, 11.1590)
Luminance	0.4700 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#99C539 #6539C5

analogous

#C5AB39 #99C539 #53C539

triadic

#99C539 #3999C5 #C53999

tetradic

#99C539 #39C5AB #6539C5 #C53953

square

#99C539 #39C5AB #6539C5 #C53953

split-complementary

#99C539 #3953C5 #AB39C5

monochromatic

#4F661E #74962B #99C539 #B2D368 #CAE197

Accessibility & contrast

On white

2.02

#99C539 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.40

#99C539 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #99C539

10.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##99C539	#FFFFFF	#000000	##000000
##99C539	1.00	2.02	10.40	10.40
#FFFFFF	2.02	1.00	21.00	21.00
#000000	10.40	21.00	1.00	1.00
##000000	10.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D0B821

Deuteranopia (green-blind)

#CAB645

Tritanopia (blue-blind)

#A0BCAA

Achromatopsia (no color)

#B6B6B6

Design tokens & code

CSS

--color: #99c539;
/* rgb */ color: rgb(153, 197, 57);
/* oklch */ color: oklch(76.6% 0.171 125.5);

Tailwind

colors: {
  custom: {
    50: '#bbd678',
    500: '#99c539',
    950: '#000000',
  },
}

SCSS

$custom: #99c539;
$custom-light: #bbd678;
$custom-dark: #000000;

JSON

{
  "hex": "#99c539",
  "rgb": {
    "r": 153,
    "g": 197,
    "b": 57
  },
  "hsl": {
    "h": 78.857,
    "s": 55.118,
    "l": 49.804
  },
  "oklch": {
    "l": 0.76581,
    "c": 0.17051,
    "h": 125.5
  },
  "luminance": 0.47
}

Semantic roles & 50–950 ramp

primary

#99C539

secondary

#A18DCD

accent

#49DE78

background

#FBFDF7

surface

#F7FAEE

border

#D0D3C9

text

#121409

muted

#81837B

Preview Lab

Preview with #99C539

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →